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HL: Fachverband Halbleiterphysik

HL 17: Poster I

HL 17.26: Poster

Montag, 25. Februar 2008, 16:30–19:00, Poster D

Deep level transient spectroscopy measurements on CuInS2-thin film solar cells — •Stephanie Malek, Martin Knipper, and Jürgen Parisi — Carl-von-Ossietzky-Universität Oldenburg, Germany

During the last decade CuInS2 was investigated for its use as absorber in thin film solar cells. Now these cells are ready for volume production. The advantages against already used materials are e. g. high absorbing capacity and cost-efficient and sustainable production. Because of the great discrepancy between predicted degree of efficiency and the already reached degree more investigations are necessary. To get a better understanding of the electron transport and recombination in order to arise efficiency we characterize the solar cells by deep level transient spectroscopy (DLTS). This method gives information about crystal defects depending on their electric position. Transient capacity measurements in the range of 25 K and 350 K allow us to determine activation energy and concentration of electron traps.